Apparatus for the treatment of smoke from furnaces and the like.



I W. L. THOMAS. APPARATUS FOR THE TREATMENT OF SMOKE FROM FURNACES AND THE LIKE. APPLICATION FILED IJEO.11, 1911.

1,823 Patented D6G.23,1913.

UNITED STATES PATENT OFFICE.

WILLIAM-LLEWELYN THOMAS, OF WHEA'ILEY, ENGLAND, ASSIGNOR TO THE SMOKE ELIMINATOR SYNDICATE LIMITED, OF LONDON, ENGLAND.

APPARATUS FOR THE TREATMENT or SMOKE FROM FURNACES AND THE LIKE.

Specification of Letters Patent.

Application filed December 11, 1911.

Patented Dec. 23, 1913.- Serial No. 685,121.

To all whom it may concern Be it known that I, WILLIAM LLEWELYN THoMAs, a subject of the King of Great Britain and Ireland, and resident of Wheat ley, in the county of Oxford, England, have inventedcertain new and useful Improvements in Apparatus for the Treatment of Smoke from Furnaces and the like, of which the following is a specification.

This invention relates to apparatus for removing smoke and solid particles from the products of combustion from hearths, furnaces and the like, and more particularly to that class of such apparatus in which the smoke is passed through a chamber and subjected to the action of a continuous spray of Water.

According to this invention the products of combustion are passed downward through a vertical chamber-in which is mounted the spraying device. The device consists .of a perforated pipe coiled into a conical spiral and mounted upon a central vertical spindle by means of which it is rotated upon its lon axis. The products of combustion are led into the open base of the coil and are caused by means of battles to be projected outwardly through the interstices of the coil. When the coil is at rest the water passing through the pipe passes through the perforations and descends and falls vertically to the perforated floor of the apparatus. The streams of water issuing from the spiral pipe will form a helical surface which, when revolved in one direction, would force the smoke downward in the direction of the pitch of the helix. Perforated plates are arranged at the base of the apparatus so as to cause the more effectual action of the Water. A

fan is provided near the enlarged portion or a but tail sectional view of the pipe coil s owing the direction of the the axis of the coil. 1

Similar reference letters denote corresponding parts in the several figures.

perforations relative to within its turns an The accompanying drawing in which A refers to the casing illustrates a practical method of carrying out the invention.

Suspended from the lower end of a hollow and rotatable pipe a and connected there with is a hollow perforated downwardly extending con'vergin coil 1) having arranged secured thereto and to a centrally depending pipe a in any suitable manner a series of hollow frusto-conical baffle cones c that conver e upwardly and vary in size. The pipe or forms a continuation of the pipe a and has a connection by a branch pipe at at one of the cones c with said pipe a as shown, to further feed the coil 6, the pipe a having at its lower end a bearing j carried by a bridge piece j The hollow and unperforated pipe I) carryin this coil, which by its upper end is mount'e on a ball bearing race 03 arranged within and near the top of a closed chamber or tank 6, is rotated in one direction by any suitable means, for instance by a pulley I, while a fan 9 loosely mounted on said hollow pipe 0. which acts as chamber e into two parts or chambers e, 2

the bottom of the lower part being formed .by gauze diaphragms j, fixed to the pipe a so as to rotate therewith, which lead to a discharging chamber or tank is, and from near the bottom of the lower chamber e there is a by-pass n leading to the top of the upper chamber c.

In operation, water is fed in any suitable manner to the hollow and rotatable pipe 0;, a and issues through the perforations in the spiral b, which perforations are preferably inclined inward and downward toward the central axis of the coil, while smoke is exhausted from the furnace or the like through a suitable intake at connected to the upper or exhaust chamber intosaid chamber by means of the action of the rotating coil and the fan 9, said smoke passing through the opening in the bearer plate I) of the pipe 6. In practice it is found that the use of said fan is only required when first firing the furnaces and the like takes place, in other words to assist in producing a forced draft, the suction caused by the continuous falling of the helical spray of water thrown from the revolving coil being sufiicient to efi'ect the exhaust and movement of the smoke.

The smoke after passing through the central opening in the bearer plate is directed into the base of the coil; part of the smoke passes through the top of the hollow cone or baffle a downward on tothe outer surface of the next and lower cone or-bafiie 0;the other part of the smoke strikes against the outer surface of the top hollowcone or baffle 0 and is thrown outward and toward the revolving coil 6, these actions taking place with each succeeding cone or baffie. The smoke thus thrown outward meets with the water given off by the coil and is washed or broken up thereby. The said smoke or gases are further cleansed by contact and intermingling with the helical surface of water that has previously been referred to in the specification. They are then forced down onto the perforated plate 2', and thence to a second chamber 6 where they are par tially collected or retarded and carried back by the by-pass n to the exhaust chamber 6' for further treatment by the water thrown off by the coil. The unconsumed particles and unabsorbed washed gases held by the water finally pass from the collecting chamber e on to the beforementioned diaphragms j and thence into the tank 70 and from thence to waste, or the water may be returned to the tank and if filtered may be returned to the boilers (as feed water) thus economizing, I

or the heated water may be returned for other purposes, the unconsumed carbon and any by-products being used or dealt with as required. i I

Having now described my invention what I claim as new and desire to secure by Letters Patent of the United States is 1. An apparatus of the class described, comprising a casing having a gas inlet, a main discharging chamber, and an intermediately located gas-collecting chamber, a bypass connect-ion providing communication between the said gas-collecting chamber and the gas inlet end of the casing, means for producing a continuous revolving spray within the casing, and means for forcing the incoming gases through said spray.

2. A smoke consumer comprising a casing having a gas inlet, a main discharging chamher, and an intermediately located gas-collecting and retarding chamber, a water supply connection, a vertical hollow pipe shaft in communication with the water supply connection, a helical coil of perforated tubing rotatably mounted in the casing and in communication with the said hollow pipe shaft,

baflies located in the coil, a by-pass connecting the collecting and retarding chamber and the top part of the, casing, a fan loosely mounted on said vertical plpe shaft, and means on the fan and pipe shaft for operating them.

3. An apparatus of the class described, comprising a casing having a gas inlet at one end, a main discharging chamber at its opposite end, and an intermediately located gas-collecting and retarding chamber, a water supply connection, a hollow vertical pipe shaft journaled in the casing and in communication with the water supply connection, a convergent helical coilof perforated tubing carried by and in communication with the hollow pipe shaft, a fan loosely mounted on the pipe shaft within the gas-receiving end of the casing, conical baffles arranged inside of the said coil, perforated diaphragms secured to the said shaft above the main discharging chamber, a perforated plate fitted tothe casing above the 'diaphragms and combining with the latter to form the said gas-collecting chamber, a by-pass connection providing communication between the said gas-collecting chamher and the gas-receiving end of the casing, and means for respectively rotating the shaft and the said fan.

In testimony whereof I have aiiixed my signature in presence of two witnesses.

WILLIAM LLEWELYN THGMAS.

Witnesses:

RoBT. HUNTER, E. C. AXE. 

